Step 3

Step 4

Remove from heat. Add vanilla to pan (do not stir).

Step 5

Cool, without stirring, to 110°, about 30 minutes.

Step 6

Beat with a spoon until fudge just begins to thicken. Gradually stir in confectioners' sugar until smooth; add nuts and continue stirring until fudge becomes very thick and just begins to lose its sheen.